A116199 - cp's OEIS frontend

A116199 a(n) = the number of positive divisors of n which are coprime to sigma(n) = A000203(n).

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	1
7	2
8	4
9	3
10	2
11	2
12	2
13	2
14	2
15	2
16	5
17	2
18	2
19	2
20	2
21	4
22	2
23	2
24	1
25	3
26	2
27	4
28	1
29	2
30	2
31	2
32	6
33	2
34	2
35	4
36	9
37	2
38	2
39	4
40	1
41	2
42	2
43	2
44	2
45	2
46	2
47	2
48	2
49	3
50	6
51	2
52	2
53	2
54	1
55	4
56	2
57	4
58	2
59	2
60	2
61	2
62	2
63	6
64	7
65	4
66	2
67	2
68	2
69	2
70	4
71	2
72	4
73	2
74	2
75	6
76	2
77	4
78	2
79	2
80	2
81	5
82	2
83	2
84	2
85	4
86	2
87	2
88	2
89	2
90	2
91	2
92	2
93	4
94	2
95	2
96	1
97	2
98	6
99	2
100	9
101	2
102	2
103	2
104	2
105	4

[1, 2, 2, 3, 2, 1, 2, 4, 3, 2, 2, 2, 2, 2, 2, 5, 2, 2, 2, 2, 4, 2, 2, 1, 3, 2, 4, 1, 2, 2, 2, 6, 2, 2, 4, 9, 2, 2, 4, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 6, 2, 2, 2, 1, 4, 2, 4, 2, 2, 2, 2, 2, 6, 7, 4, 2, 2, 2, 2, 4, 2, 4, 2, 2, 6, 2, 4, 2, 2, 2, 5, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, 2, 1, 2, 6, 2, 9, 2, 2, 2, 2, 4]

cp's OEIS Frontend

A116199 a(n) = the number of positive divisors of n which are coprime to sigma(n) = A000203(n).

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	1
7	2
8	4
9	3
10	2
11	2
12	2
13	2
14	2
15	2
16	5
17	2
18	2
19	2
20	2
21	4
22	2
23	2
24	1
25	3
26	2
27	4
28	1
29	2
30	2
31	2
32	6
33	2
34	2
35	4
36	9
37	2
38	2
39	4
40	1
41	2
42	2
43	2
44	2
45	2
46	2
47	2
48	2
49	3
50	6
51	2
52	2
53	2
54	1
55	4
56	2
57	4
58	2
59	2
60	2
61	2
62	2
63	6
64	7
65	4
66	2
67	2
68	2
69	2
70	4
71	2
72	4
73	2
74	2
75	6
76	2
77	4
78	2
79	2
80	2
81	5
82	2
83	2
84	2
85	4
86	2
87	2
88	2
89	2
90	2
91	2
92	2
93	4
94	2
95	2
96	1
97	2
98	6
99	2
100	9
101	2
102	2
103	2
104	2
105	4

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	1
7	2
8	4
9	3
10	2
11	2
12	2
13	2
14	2
15	2
16	5
17	2
18	2
19	2
20	2
21	4
22	2
23	2
24	1
25	3
26	2
27	4
28	1
29	2
30	2
31	2
32	6
33	2
34	2
35	4
36	9
37	2
38	2
39	4
40	1
41	2
42	2
43	2
44	2
45	2
46	2
47	2
48	2
49	3
50	6
51	2
52	2
53	2
54	1
55	4
56	2
57	4
58	2
59	2
60	2
61	2
62	2
63	6
64	7
65	4
66	2
67	2
68	2
69	2
70	4
71	2
72	4
73	2
74	2
75	6
76	2
77	4
78	2
79	2
80	2
81	5
82	2
83	2
84	2
85	4
86	2
87	2
88	2
89	2
90	2
91	2
92	2
93	4
94	2
95	2
96	1
97	2
98	6
99	2
100	9
101	2
102	2
103	2
104	2
105	4

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	1
7	2
8	4
9	3
10	2
11	2
12	2
13	2
14	2
15	2
16	5
17	2
18	2
19	2
20	2
21	4
22	2
23	2
24	1
25	3
26	2
27	4
28	1
29	2
30	2
31	2
32	6
33	2
34	2
35	4
36	9
37	2
38	2
39	4
40	1
41	2
42	2
43	2
44	2
45	2
46	2
47	2
48	2
49	3
50	6
51	2
52	2
53	2
54	1
55	4
56	2
57	4
58	2
59	2
60	2
61	2
62	2
63	6
64	7
65	4
66	2
67	2
68	2
69	2
70	4
71	2
72	4
73	2
74	2
75	6
76	2
77	4
78	2
79	2
80	2
81	5
82	2
83	2
84	2
85	4
86	2
87	2
88	2
89	2
90	2
91	2
92	2
93	4
94	2
95	2
96	1
97	2
98	6
99	2
100	9
101	2
102	2
103	2
104	2
105	4